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Chosen biweekly for their relevance to personal care, "Patent Picks" are taken from publicly available sources. This edition features technologies related to sunless tanning, skin protection and anti-aging skin care.
Advanced glycation end products as active ingredients
US Patent 8202892
Publication date: June 19, 2012
Assignee: Henkel AG & Co. KGaA
According to this patent, there is a need to enrich the prior art with novel cosmetic active ingredients or complexes of active ingredients. In particular, those that provide sustained protection and/or improved skin care are of great interest.The present invention relates to the use of a cosmetic composition comprising at least one compound from the group of advanced glycation end products (AGEs) and/or their precursors as an agent for skin treatment, especially for protecting and/or caring for skin. The AGEs utilized are prepared by reacting sugars with the amino acids lysine and/or arginine. They are particularly interesting actives for conditioning, protecting and revitalizing skin. Preparations comprising a whole range active ingredients are available in large numbers and in many forms. The active substance present in a fraction of 0.0001–38% w/w, based on total weight of the composition, is preferably chosen from the following products or their mixtures: self-tanning active substances, skin-lightening active substances, skin-soothing active substances, flavonoids and flavonoid-rich plant extracts, isoflavonoids and isoflavonoid-rich plant extracts,etc.
Compositions and methods for stabilizing ingredients using 2,4-pentanedione compounds
WIPO Patent Application WO/2012/078546
Publication date: June 14, 2012
Assignee: Sytheon Ltd.
Benzylidene substituted 2,4-pentanedione compounds without phenolic hydroxyl group(s) were found by the inventors of this patent to provide photostability to otherwise photosensitive compounds and compositions. The stabilizing compounds disclosed are especially applicable and beneficial with respect to sunscreen actives and sunscreen-containing compositions. Formulations described may also contain active ingredients that promote tanning by amplifying the effects of UV light, e.g., melanin, L-tyrosine, tea oil and green tea extracts.